Monitoring and analysing oil condition to generate maintenance savings: a case study in a CNG engine powered urban transport fleet

The authors from Universitat Politecnica de Valencia wish to thank Spanish Grant TRA2008-06508 from Ministerio de Ciencia e Innovacion - Direccion General de Investigacion for supporting this work. Mr Gomez thanks the UPV for his grant 2011-S2-5003 in the frame of the PAID programme.